建筑结构学报2013，Vol.34Issue(8)：82-89,8.
内置钢骨组合L形截面钢管混凝土短柱轴压性能试验研究
Experimental research on axially loaded composite L-section steel tubular short columns filled with steel-reinforced concrete
摘要
Abstract
In order to improve the axial bearing capacity of special shaped concrete-filled steel tubular columns,special-section steel tubular column filled with reinforcing steel is presented in this paper.Considering the reinforcing steel index and confining index,twelve composite L-section steel tubular short columns filled with steel-reinforced concrete and three composite L-section steel tubular short columns filled with concrete only were designed.The failure modes of specimens,load-deformation relationship,ultimate bearing capacity and the influences of reinforcing steel index and confining index on the axial loading behavior,were analyzed and tested.Based on the code provisions of China and other countries,the formula for the calculation of compression bearing capacity of composite L-section steel tubular column filled with steel-reinforced concrete was developed.The test results indicate that the axial bearing capacity of special shaped concrete-filled steel tubular columns is high.The strength and ductility can be improved by increasing the reinforcing steel index and confining index.The proposed formula can be useful for engineering design.关键词
钢管混凝土/钢骨混凝土/组合异形柱/静力试验/轴压承载力Key words
concrete-filled steel tube/ steel-reinforced concrete/ composite special-shaped column/ static test/ axial bearing capacity分类
建筑与水利引用本文复制引用
杜国锋,宋鑫,余思平..内置钢骨组合L形截面钢管混凝土短柱轴压性能试验研究[J].建筑结构学报,2013,34(8):82-89,8.基金项目
国家自然科学基金项目(50978033),湖北省科技计划项目(2010CDZ003). （50978033）
